J O Clark Dam

TR-FLAT ROCK BRANCH· Edgefield, South Carolina· Built 1988· 28 ft tall
Low Hazard Irrigation Private

Key Takeaway

J O Clark Dam is classified as low hazard in South Carolina. It was completed in 1988 and is 38 years old. Its primary use is irrigation.

Physical Details

Dam Height 28 ft (taller than 74.2% in SC)
Max Storage90 acre-ft
Normal Storage61 acre-ft
Surface Area6 acres
Year Completed1988 (38 years old)
NID IDSC02603

Safety Information

Low Hazard

No probable loss of human life and low economic/environmental losses expected.

Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?

Emergency Action Plan: No
Last Inspection: July 24, 2017
State Regulated: Yes
Regulatory Agency: SC DHEC

Ownership

CLARK NICHOLSON FARM LLC;JOHNNY W CLARK ET AL

Private

Nearby Dams

J W Yonce Pond Dam

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High Hazard 19 ft

Charlie Rauton Dam

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Significant Hazard 25 ft

Larry L Yonce Pond Dam

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Significant Hazard 14 ft

Joyce Willing Dam

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Significant Hazard 16 ft

Kelsey Pond Dam

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High Hazard 22 ft

Jw Yonce and Sons Dam 3

Saluda, SC

Low Hazard 26 ft

Mason Motes Pond Dam

Edgefield, SC

Low Hazard 30 ft

Holmes Mitchell Pond Dam

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Low Hazard 26 ft

Frequently Asked Questions

What is the hazard classification of J O Clark Dam?

J O Clark Dam is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates J O Clark Dam?

J O Clark Dam is owned by CLARK NICHOLSON FARM LLC;JOHNNY W CLARK ET AL (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was J O Clark Dam built?

J O Clark Dam was completed in 1988, making it 38 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.

What is the primary purpose of J O Clark Dam?

J O Clark Dam serves the following purposes: Irrigation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is J O Clark Dam?

J O Clark Dam has a dam height of 28 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.

When was J O Clark Dam last inspected?

J O Clark Dam was last inspected on July 24, 2017. Inspection dates indicate when a formal review occurred, not the results of that inspection.

Data from the National Inventory of Dams (NID) maintained by the US Army Corps of Engineers. Dam conditions may have changed since the last update. This site is not affiliated with USACE. Do not use for emergency planning — contact your local dam safety program.